Snark

Snarks are a species of bandersnatch. They are thought to have
evolved from the slithy toves along with the other
bandersnatches. Snarks were common in New England forests until the
late 19th century, when it was thought that they were hunted to
extinction. Recent ethological expeditions, however, have uncovered
evidence that there may be a few extant individuals. Snarks are
favorites with animal lovers everywhere because in the spring, they
gyre and gimble on small ponds in a brilliant mating display. In
reference works on bandersnatches, snarks are referred to collectively
by the Latin name Snarkidae.

Snarks are a species of bandersnatch and are thought to have evolved
from the slithy toves along with the other bandersnatches. Snarks
evolved in the Devonian period and successfully adapted themselves in
several ecological niches until the late 19th century. The fact that
they have a dorsal sigmoid bone establishes their descent from the
slithy toves.

Snarks bear young just at the point in early summer when their food
source is most abundant. Their biological clocks are very well tuned
and biologists study them as the principal model of such clocks in the
animal kingdom.